Extensible bedstead



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Patented-Sept. 27, I898. A. NILSON.

EXTENSIBLE BEDSTEAD.

(Application filed Mar. 16, 1898.)

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N0. 6ll,270. I Patented Sept. 27, I898. A. NILSUN.

EXTENSIBLE BEDSTEAD.

(Application filed Mar. 16 1898.

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No. 6ll,270.

Patented Sept. 27, I898.

A. NILSON. EXTENSIBLE BEDSTEAD.

(Application filed Mar. 16, 1898.)

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ATENT EXTENSIB LE BEDSTEAD.

SPECIFICATION forming part of Letters Patent No. 611,270, datedSeptember 27, 1898.

Application filed March 1 6 l 8 9 8.

T0 aZZ whom it may concern:

Be it known that I, ANTON NILSON, a citizen of the United States,residing at Natick,

' in the county of Middlesex and State of Massachusetts, have inventednew and useful Improvements in Extensible Bedsteads, of which thefollowing is a specification.

This invention relates to bedsteads which when extended in length are inposition for use and-when not in use are contracted in length or closed,so as to occupy much less space; and the invention relates to certainnovel constructions and arrangements of parts whereby the bedstead isthus rendered extensible and contractible, whereby the rails may becleansed internally, and whereby the general construction of the deviceis improved.

The nature of the invention is fully described in detail below andillustrated in the accompanying drawings, in which- Figure 1 is a sideelevation of my improved bedstead extended and in position for use. Fig.2 is a plan view of the same. Fig. 3 is longitudinal vertical section ofthe same, a small portion being represented as broken out. Fig. 4 is aplan View of the same closed or contracted, small portions beingrepresented as broken'out. Fig. 5 is a longitudinal vertical section ofthe same in a closed posi- Fig. 6 is a cross vertical section taken online X, Fig. 5. Figs. 7 and 8 are details in vertical section of thejoints at the foot and head, respectively.

Similar letters of reference indicate corresponding parts.

A represents the headboard, provided with legs A, and A the footboard,provided with the legs A. Rigid with the headboard and extendingtherefrom are the side rails 13, made hollow or longitudinally recessed,as indicated in Figs. 4 and 6, to receive telescopically the side railsO, rigid with and extending from the footboard A. The under edges ofthese rails C are formed into racks C, as indicated in Figs. 1 and 7 bymeans of which they are engaged by the gear-wheels D, fast on the shaftE, which extends across the bedstead and is supported by suitable boxese, secured to the under sides of the rails B. Rigid or integral with thegear-wheelsD are sprockets D, Fig. 3, which are connected by suitableSerial No. 674,032. No modelrails F, and the cross-piece H, from whichrigidly extend the side rails H. The side rails F are hollow and areconstructed substantially like the side rails B, and the rails H extendinto the rails F telescopically. (See Figs. 4: and 6.) A cross-bar Fconnects the rails F near their inner ends.

Rigidly secured to the headboard A and legs A is the horizontal ledge orcross-bar K.

This ledge extends inward, as shown in Figs.

3 and 5, and has secured to its inner edge the upwardly-extending flangeK. A similar ledge L, provided with an upwardly-extend ing flange L, issecured to and extends in.- ward from the footboard A and legs A.

These flanges are shorter than the ledges towhich they are secured, sothat the crosspieces F and H can drop behind the flanges and rest on theledges K and'L, respectively, while said flanges K and L extendup withinor between the rails F and H, respectively, Thus the telescopic innerextensible frame hasits ends locked to the telescopic outer extensibleframe, and any movement to contract or extend'the outer frame of thebedstead Will cause the inner frame to contract .or be extended with it.

The headboard is provided with a horizontal opening h, Figs. 3, 5, and6, within which a horizontal roll g is disposed, said roll having itsbearings in the legs A. A bed-bottom P, (shown in Figs. 1, 3, 5, and 6only,) made of canvas or other suitable material, has one end secured tothe cross-bar H, and thence extends horizontally over the cross-bar F.and

over the roll g down to the roll a, to which its opposite end issecured.

The bedstead being extended into the position indicated in Figs. 1, 2,and 3, to close or contract the same a suitable crank is applied to thesquared end of the shaft E, which by means of the gear-wheels D,engaging with the racks O, closes the bedstead by moving the side railsG into the rails B. This movement also pushes the rails H into the railsF. At the same time the sprocket-wheels D by means of the chains 1)rotate the roll a and wind around it the canvas P, as shown in Figs. 5and 6. To extend the bedstead, the shaft E is rotated in a reversedirection, thus drawing the rails C out of the rails B into the positionindicated in Figs. 1, 2, and 3, the inner frame F F H H being extendedat the same time by the flanges K and L, which pull apart thecross-pieces F and H. Simultaneously with this movement the roll a isrotated in an opposite direction, and thus allows the canvas P to unwindas fast as the bedstead is extended. Any suitable stop may be providedfor preventing the rails B and C from entirely separating, the meansshown in the drawings consisting of the fiat tooth C (broken lines,Fig. 1) at the end of the rack (J. The broken lines S and S indicateshort mattresses, one of which is laid upon the other when the bedsteadis to be closed. The hollow rails B and F are provided with lids orcovers N and N, respectively hinged at n and a to said rails B and F. Byswinging back these covers access may be had to the openings or spacesinto which the bars 0 and H extend, and hence such openings can bethoroughly cleansed. Across-bar m may be provided, if desired, forfurther stiffening the bedstead, such crossbar extending from one to theother of the rails B.

The mode of connecting the ends of the bars 0 to the legs A, rigid withor making a part of the footboard, is indicated in Fig. 7. Aninternally-screw-threaded tube or socket R extends horizontally throughthe leg and into the end of the bar C. A plate R is secured to the outersurface of the leg A, and a screw R extends through said plate into thetube R and by engaging therewith secures the rail and footboard rigidlyin position. The leg A"is recessed at a to receive the end of the rail0.

The method of securing the rail B to the leg A, makinga part of theheadboard A, is illustrated in Fig. 8. A block T is secured by dowels orbolts T within the hollow rail B, said block extending therefrom intothe recess a in the leg A. A plate U is screwed to the outer side ofsaid leg, and a staple V extends around the upper, under, and innersides of the block T, as shown. has hollow legs V, which extend throughthe leg A and against the inner surface of the plate U. Screws WV extendthrough suitable openings in the plate and engage with the threads inthe hollow legs V, and thus unite the headboard and rail B.

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent, is-

1. In an extensible bedstead,the headboard A provided with thehorizontal openings h and legs A; the footboard A and legs A; theextensible side rails each consisting of the two parts B and O slidinglongitudinally with relation to each other, said parts 0 being formed ontheir under edges with the racks O; the horizontal shaft E supported bythe parts B of the rails and extending from one to the other; thegear-Wheels D fast on said shaft and engaging with said racks; thesprocket-wheels D fast on said shaft; the horizontal roll CL supportedby the legs A and provided with suitable sprockets d; chains connectingthe sprockets D and the sprockets on the roll a; the horizontal roll 9supportedin said opening in the headboard; the inner extensible frame F,H, F, H adapted to be extended and contracted by and with the outerframe; and the bed-bottom consisting of the strip P secured at one endto the foot cross-piece H, and extending therefrom to and over said rollg and to the lower roll a to which its opposite end is secured,substantially as set forth.

2. In an extensible bedstead, the leg A provided with the recess a; thehollow rail 13; the block T extending horizontally from the interior ofsaid rail into said recess and rigidly secured to the rail; the plate U,secured to the outer surface of the leg opposite the recess; the stapleV provided with the hollow internally-screw-threaded legs V,said stapleembracing the block T within the rail and with its legs extendinghorizontally to the outer surface of the leg A; and screws extendingthrough said plate and engaging with the threaded hollow legs of thestaple, substantially as set forth.

ANTON NILSON.

Witnesses:

HENRY W. WILLIAMs, A. N. BONNEY.

This staple

